TableTop CHAIN MATERIALS · EM - TT - 2 Rex® TableTop® and MatTop® Chain Engineering Manual Contact Rexnord Application Engineering for more information 1.262.376.4800

Rex® TableTop® and MatTop® Chain Engineering Manual EM - TT - 1

Contact Rexnord Application Engineering for more information 1.262.376.4800

TableTop®

Conveyor Chain

Materia;s

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> AS (Anti-Static)

> BWR (Black Wear Resistant)

> CR (Extreme Chemical Resistant)

> D & WD (Acetal)

> DUV (Ultraviolet Resistant)

> ESD (Electrostatic Dissipative)

> FR (Flame Retardant)

> HPTM & WHP (High Performance)

> HS (Heat Stabilized)

> LF & WLF (LowFriction)

> MR (Melt Resistant)

> P (Chemical Resistant)

> PSTM (PlatinumSeriesTM)

> S (Carbon Steel)

> SS (Stainless Steel)

> SSB (LowMagneticStainless Steel)

> WX (AbrasionResistant)

Rexnord, Rex, TableTop,MatTop, PS, PlatinumSeries, LPC, Magnetflexand HP are trademarksof Rexnord Industries,Inc.

Nylatron is a registeredtrademark of QuadrantEngineering PlasticsProducts.

All rights Reserved.

CHAIN MATERIALS

For more detailed material information, seepage EM - TT - 10 or the Appendix located at the end of this manual.

Materials vary per chain series; see ProductCatalog to determine standard versus specialmaterials.

��AS (Anti-Static)

�An electrically conductive acetal formulated to reduce or eliminate nuisance static charge

�ALWAYS contact Rexnord Application Engineering for assistance

��BWR (Black Wear Resistant)

�BWR may extend chain life up to 5 times in comparison to other plastic materials in applications such as conveying rough machined parts

��CR (Extreme Chemical Resistant)

�Fluorinated polymer which is chemically resistant to high concentrations of oxidizing agents, acids and bases

��D & WD (Acetal)

�Plain acetal

��DUV (Ultraviolet Resistant)

�Specially formulated acetal

�Used for outdoor applications with direct exposure to the sun or UV radiation

��ESD (Electrostatic Dissipative)

�Polypropylene formulated for conveying sensitive products such as electronics and computer chips where controlling static charge or static decay is critical

�ALWAYS contact Rexnord Application Engineering for assistance

��FR (Flame Retardant)

�Flame retardant polyester that meets the requirements of UL Standard 94 V-0 rated combustion

��HP™ & WHP (High Performance)

�Patented blend of acetal specifically formulated for dry running conveyors due to excellent friction characteristics

��HS (Heat Stabilized)

�Nylon resin designed for environments that contain hot water spray (rinser, sterilizer and pasteurizer applications)

��LF & WLF (Low Friction)

�Patented blend of acetal that provides good wear resistance and long service life due to the low coefficient of friction

��MR (Melt Resistant)

�A nylon material with a high melting point used to prevent hot objects (product temperature up to 375° F (190° C)) from melting the top of the chain

��P (Chemical Resistant)

�A polyester formulated to reduce or eliminate material degradation in applications where chemicals such as chlorine and phosphorous are present in moderate concentrations

��PS™ (Platinum Series™)

�Patented blend of acetal specially formulated for high speed conveying applications

��S (Carbon Steel)

�A strong, abrasion resistant, fine grained, hardened carbon steel with a smooth finish

�Used in applications requiring high strength, high impact resistance and a hardened chain surface such as part handling

��SS (Stainless Steel)

�Non-magnetic, corrosion resistant, abrasion resistant austenitic stainless steel

��SSB (Low Magnetic Stainless Steel)

�A special austenitic stainless steel which allows a magnetic field to pass through without affecting chain tension or drive requirements

��WX (Abrasion Resistant)

�A nylon material formulated to be used in abrasive applications where chain is subjected to abrasives such as glass, sand and dirt

Since materials vary in strength, refer to theProduct Catalog for specific chain / materialstrengths when changing out materials.

!CAUTION

EM - TT - 2 Rex® TableTop® and MatTop® Chain Engineering Manual


FRICTION TABLE BETWEEN CHAIN AND PRODUCT (Fm)TableTop®

ConveyorChain

Materials

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> Friction Table Between Chainand Product (Fm)

Rexnord, Rex, TableTop,MatTop, PS, PlatinumSeries, LPC, LPC279,Magnetflex and HP aretrademarks of RexnordIndustries, Inc.



All values shown in this table were obtained through product testing. Actual values maybe higher or lower depending on environmental conditions.

i

NR denotes “not recommended”Dash denotes “combination not tested”

Chain Material Product Material

Chain Material

Lubrication Aluminum GlassReturnable

Glass BottlesNon-Returnable

Glass BottlesPaper

Plastic(including PET)

Steel

AS

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

BWR

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.30NR NR NR NR NR NR NRNR NR NR NR NR NR NRNR NR NR NR NR NR 0.10

CR

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

DWD

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

DUV

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

ESD

DryWater

Soap & WaterOil

0.28 0.22 0.29 0.22 0.35 0.30 0.350.19 0.17 0.21 0.17 NR 0.25 0.250.16 0.10 0.14 0.10 NR 0.20 0.20

- - - - NR - 0.10

FR

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

HP™

WHP

DryWater

Soap & WaterOil

0.18 0.13 0.16 0.12 0.23 0.18 0.180.14 0.12 0.16 0.11 NR 0.16 0.160.12 0.10 0.14 0.10 NR 0.14 0.13

- - - - NR - 0.10

HS

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

LF WLF

DryWater

Soap & WaterOil

0.20 0.15 0.20 0.15 0.30 0.20 0.250.15 0.13 0.16 0.13 NR 0.18 0.200.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

MR

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.30NR NR NR NR NR NR NRNR NR NR NR NR NR NRNR NR NR NR NR NR 0.10

P

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

PS™

DryWater

Soap & WaterOil

0.25 0.20 0.27 0.20 0.33 0.25 0.300.17 0.15 0.18 0.15 NR 0.20 0.220.12 0.10 0.14 0.10 NR 0.15 0.15

- - - - NR - 0.10

S

DryWater

Soap & WaterOil

0.28 0.35 0.47 0.35 0.40 0.30 0.35NR NR NR NR NR NR NRNR NR NR NR NR NR NR- - - - NR - 0.15

SSSSB

DryWater

Soap & WaterOil

0.28 0.35 0.47 0.35 0.40 0.30 0.350.19 0.25 0.31 0.25 NR 0.20 0.250.12 0.15 0.21 0.15 NR 0.10 0.15

- - - - NR - 0.15

WX

DryWater

Soap & WaterOil

0.20 0.15 0.20 0.15 0.30 0.20 0.25NR NR NR NR NR NR NRNR NR NR NR NR NR NRNR NR NR NR NR NR NR



TableTop®

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> Friction TableBetween Chain and Wearstrips (Fw)




FRICTION TABLE BETWEEN CHAIN AND WEARSTRIPS (Fw)

Friction between chain and wearstrip (Fw) must be adjusted when inclining / declining. SeeFriction Formulas on page EM - MF - 27 (Multiflex section) for more information.

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All values shown in this table were obtained through product testing. Actual values may be higheror lower depending on environmental conditions.

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Chain Material Wearstrip Material

Chain MaterialLubricationConditions

Steel and Stainless Steel

UHMWPE Nylatron®

AS

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

BWR

DryWater

Soap & WaterOil

0.28 0.22 0.22NR NR NRNR NR NR0.10 0.10 0.10

CR

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

D, WD

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

DUV

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

ESD

DryWater

Soap & WaterOil

0.35 0.30 0.300.25 0.25 0.250.20 0.20 0.200.10 0.10 0.10

FR

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

HP™, WHP

DryWater

Soap & WaterOil

0.22 0.17 0.170.20 0.16 0.160.15 0.14 0.140.10 0.10 0.10

HS

DryWater

Soap & WaterOil

0.30 0.28 0.280.25 0.23 0.230.18 0.18 0.180.10 0.10 0.10

LF, WLF

DryWater

Soap & WaterOil

0.25 0.20 0.200.20 0.18 0.180.15 0.15 0.150.10 0.10 0.10

MR

DryWater

Soap & WaterOil

0.30 0.28 0.28NR NR NRNR NR NR0.10 0.10 0.10

P

DryWater

Soap & WaterOil

0.30 0.25 0.250.23 0.21 0.210.15 0.15 0.150.10 0.10 0.10

PS™

DryWater

Soap & WaterOil

0.18 0.17 0.170.16 0.16 NR0.13 0.14 NR0.10 0.10 0.10

S

DryWater

Soap & WaterOil

0.50 0.40 0.40NR NR NRNR NR NR0.20 0.20 0.20

SS, SSB

DryWater

Soap & WaterOil

0.50 0.40 0.400.40 0.30 0.300.20 0.20 0.200.20 0.20 0.20

WX

DryWater

Soap & WaterOil

0.25 0.20 0.20NR NR NRNR NR NR0.10 0.10 0.10

Fm for LBP3000 TableTop® chain (typically) = 0.10; Fm for LBP1503 TableTop® chain (typically) = 0.11

NR denotes “not recommended”



SPROCKET AND IDLER WHEEL DESIGNATIONSTableTop®

Sprocketsand Idler

WheelDesignations

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Plastic

> Acetal

> Heat StabilizedNylon

> LF Acetal

> Glass Reinforced Nylon

> Chemical Resistant Fluorinated Polymer

> KU and KUS (Machined Plastic)

Metallic

> Semi-Steel (Cast Iron)

> SS (Stainless Steel)




Rexnord has developed a variety of sprocketand idler materials for various and uniqueapplications. Sprockets are available in plasticand metallic varieties.

��Plastic�Acetal

�Good corrosion and wear resistant properties

�One piece sprocket

�Temperature Range: -40° to +180° F(-40° to + 82° C)

�Heat Stabilized Nylon

�Stabilized nylon based resin for environments that contain hot water spray rinser, sterilizer and pasteurizer applications

�Resists thermal degradation from 212° F (100° C) water spray

�Available in select one piece styles only

�Temperature Range: +40° to + 240° F (+4° to +116° C)

�LF Acetal

�Available in select idler wheel styles only

�Self-lubricating

�Temperature Range: -40° to +180° F (-40° to + 82° C)

�Glass Reinforced Nylon

�Split sprocket design for ease in assembly and disassembly

�Excellent wear resistant properties

�Temperature Range: -40° to +180° F(-40° to + 82° C)

�Chemical Resistant Fluorinated Polymer

�Used in applications where chemical resistance is required (i.e. chlorine, phosphorous)

�Temperature Range: +40° to +240° F(+4° to + 116° C)

�KU and KUS (Machined Plastic)

�KU and KUS do not designate material

�KU designates solid (one piece) design and KUS designates a split (two piece) design

�Sprockets machined in a variety of plastic materials

�Flush side for ease in cleaning

�Sprockets come in a wide variety of pitch diameters and bore sizes

��Metallic�Semi-Steel (Cast Iron)

�Used in non-corrosive, abrasive environments such as broken glass, metal chips

�One piece sprocket

�Temperature Range: -40 to +350° F (-40° to +177° C)

�SS (Stainless Steel)

�Used in corrosive, abrasive environments such as vegetable processing, snack and foods

�Available in select chains only

�Available in split and one piece designs

�Temperature Range: -100 to + 800° F(-73° to + 427° C)



TableTop®

WearstripMaterials

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Rexnord, Rex, TableTop,MatTop, PS, PlatinumSeries, LPC, Magnetflexand HP are trademarksof Rexnord Industries,Inc.


Teflon is a registeredtrademark of E.I. duPont de Nemours andCompany and its affiliates


WEARSTRIP MATERIALS

> Acetal

> Aluminum

> Bronze and Brass

> Nylatron®

(Nylon with Moly Filler)

> Lubricant Impregnated Wood

> Steel

> Stainless Steel

> Teflon®

> UHMWPE (Ultra High Molecular Weight Polyethylene)

Proper chain and wearstrip selection willprovide optimum life. Since a function of thewearstrip is to lower friction and to reducewear, it is recommended to give carefulconsideration when selecting the material.

The following general guidelines will help inselecting the proper material for your application:

��Acetal

�Not recommended for use with acetal chains; it is best not to run identical plastics together

��Aluminum

�NOT RECOMMENDED due to poor wear resistance

��Bronze and Brass

�Sometimes used with stainless steel chains

�Typically used for non-sparking and anti-static conditions

�For bronze - recommended one half hard temper (Rb 58)

�For brass - recommended one half hard(Rb 70 Min) to full hard (Rb 82) temper

��Nylatron® (Nylon with Moly Filler)

�Recommended for dry applications due to low wear and low friction

�Especially suited for dry operation on thermoplastic side-flexing chain corners dueto its high PV (Pressure-Velocity) rating

�Typically not recommended in wet applications because it will absorb moisture and expand (if used in wet applications, allow clearance for expansion and movement of fasteners)

��Lubricant Impregnated Wood

�Commonly used in dry abrasive applications(i.e. glass, paper)

�Not recommended in wet applications

��Steel �Recommended for non-corrosive, abrasive

or high temperature applications

�Abrasive particles are less likely to imbed inmetal wearstrips in comparison to plastic

�A cold rolled plain carbon steel is recommended

�Heat treated grades - hardened to 25 to 30 Rc is recommended

��Stainless Steel

�Recommended for corrosive, abrasive or high temperature applications

�Abrasive particles are less likely to imbed inmetal wearstrips in comparison to plastic

�A cold rolled austenitic grade is recommended which offers the best corrosion resistant properties

�Recommended one quarter hard temper(25 to 35 Rc) with any chain material, especially with thermoplastic

�Softer annealed grades of austenitic are NOT RECOMMENDED. Adverse interactionbetween the chain material and the soft stainless steel might develop. When this happens, the resulting wear debris consists almost entirely of finely divided stainless steel particles, nearly black in color, similar to molydisulfide or graphite. The wear of thestainless steel might be rapid while the thermoplastic chain by contrast exhibits onlyslight wear

�Martensitic stainless steel can also be used when heat treated (25 to 35 Rc); however, itis not as corrosion resistant as austenitic

�Hardness is more critical than grade for better wear resistance

��Teflon®

�Recommended only for very low speed - low load applications

��UHMWPE (Ultra High Molecular Weight Polyethylene)

�Recommended for dry or wet applicationson straight or side-flexing conveyors

�Not recommended for abrasive conditions where particles may imbed in the surface and wear the chain

�Provide lower coefficient of friction than metals

�Not affected by moisture and more resistant to chemicals than nylon

�UHMWPE materials can be supplied withvarious fillers:

· Ceramic / glass· Conductive· Oil / wax

Wearstrip surface finish is a critical aspect for overall chain life. A surface finish of 32 µ-in Ra is recommended for metal wearstrips and 125 µ-in Ra for plastic wearstrips.

!CAUTION



LUBRICATIONTableTop®

LubricationR

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> General Recommendations

> General Typesof Lubricants

> SelectiveLubrication




Lubrication is recommended whenever theapplication permits. It not only reduces friction,thereby reducing chain tension; but also, greatly improves the wear life of the chain andwearstrips. Lubrication offers a constantcleaning effect of both the chain and wearstripand can also reduce static.

��General Recommendations

�Lubrication should contact both the chain and wearstrip

�When lubricating side-flexing Rex® TableTop®

chains, the lubricant must be applied at the entrance of the inside corner track

�Metal side-flexing chains should ALWAYS be lubricated in the corners

�Depending upon the application, lubrication requirements may vary. Lubricant quality and lubrication frequency can have a great affect on the longevity of the chain. For most common applications, any ISO 68 grade lubricant is satisfactory. For applications with special considerations such as high temperature, chemical compatibility, FDA requirements, please contact your lubrication supplier

��General Types of Lubricants

�Water - Only utilize with corrosion resistant materials. Can be used as a general lubricant; however, it is not as effective as other types due to friction and chain cleaning properties

�Water soluble lubricants and soaps - Only utilize with corrosion resistant materials.These are excellent lubricants which also help clean the chain

�Oil base lubricants - These are vegetable, mineral oils or grease which offer high lubricity. Can be used with plastic or metal materials. Recommended to be used on all metal chains whenever practical. Food grade oils are available

��Selective Lubrication

�In some applications, the presence of a lubricant cannot be tolerated. For these applications, it is recommended to utilize chains made of HPTM or PSTM acetal material with Nylatron® corners, which offers the lowest coefficient of friction

To eliminate or reduce lubrication, contact Rexnord Application Engineering to conduct a run dry survey. 1.262.376.4800

For more information on lubrication types, compatibility, methods, contact a lubricant manufacturer.

MinimumCountersink Depth

0.03 in(0.8 mm)

DIRECTION

OF TRAVEL

AA

Section A -A

Commercial GreaseFitting Located on

Inside Corner at Infeed

Method of furnishing lubricant to chain thrust surface



TableTop®

Lubrication-Other

Considerations

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> Metal Unit Link Chains

> Carbon Steel

> Stainless Steel

> Rex®

TableTop®

Chains with Roller Base Chains

> Carbon Steel Base Chains

> Stainless Steel Base chains




LUBRICATION - OTHER CONSIDERATIONS

��Metal Unit Link Chains

�Carbon Steel

�Light lubricant and rust preventative is applied at the factory to prevent corrosion during shipping and storage

�Chains should be lubricated upon installation and re-lubricated when necessary


�Stainless Steel

�Stainless steel chains are supplied dry from the factory

�Stainless steel chains can be run dry; however, lubrication will greatly increase their wear life and help reduce noise


��Rex® TableTop® Chains With Roller Base Chains

�Platetops can be either plastic or metal with the following types of base chains:

�Carbon Steel Base Chains

�Base chains are supplied with lubricant and rust preventative

�Base chains do not need to be lubricated when installed

�Base chains must be re-lubricated when necessary

�The thrust surface of side-flexing metal platetop chains should ALWAYS be lubricated in the corners which will help reduce noise as well as lubricate the chain

�Stainless Steel Base Chains

�Stainless steel base chains are supplied dry from the factory (with the exception of PSTM

1873SSL-G, see Product Catalog for details)

�Stainless steel base chains can be run dry; however, lubrication will greatly increase their wear life and help reduce noise

�The thrust surface of side-flexing metal platetop chains should ALWAYS be lubricated in the corners which will help reduce noise as well as lubricate the chain



NOTESTableTop®

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> Notes






TableTop®

Environmental Considerations

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> Abrasive Applications

> Chemical Applications

> Dry Applications

> Extreme Temperature Applications

> Metal Detector Applications

> High Speed Applications

> Long Length Conveyors / Pulsation Applications

> Static Environment Applications

> UV Applications




ENVIRONMENTAL CONSIDERATIONS

��Abrasive Applications

�Applications with the presence of dirt, sand, glass or metal particles can lead to premature wear of the conveying chain and wearstrips

�Recommendations:

�Utilize wearstrips and chains with a hard wear surface

�If possible, use controls to minimize the amount of accumulation

�The use of WX chain material and metal sprockets can extend wear life

��Chemical Applications

�Make sure any chemicals or cleaners used on conveyors are compatible with chain, wearstrip and sprockets. See table on page EM - TT - 11 for more detailed compatibility information

��Dry Applications

�Considerations to be taken when running dry:

�Product backline pressure�Conveyor cleanliness�Conveyor pulsation�Increased component wear

��Extreme Temperature Applications

�The recommended minimum and maximumoperating temperatures for Rex® TableTop®

chain and wearstrips can vary due to thepresence of moisture

��Metal Detector Applications

�Plastic chains passing through metaldetectors can be supplied with plastic pinson a Made-To-Order (MTO) basis

��High Speed Applications

�In any high speed application, the criticalaspect of the conveyor is the corners. The concern with running the chain at highspeeds is the PV (Pressure-Velocity) in thecorners. If the PV limits are exceeded, thechain or corner track may become damageddue to the heat generated from the highspeed and/or load. It is generally recommended to utilize Nylatron® cornertracks in conjunction with PS™ or HP™

materials or selective lubrication for theseapplications

��Long Length Conveyors / Pulsation Applications

�Pulsation or "slip stick" of chain results in ajerking chain motion which can occur in long, slow speed and dry conveyors.Pulsation can create product stability problems in extreme cases. It can also result in premature chain elongation or the chain jumping drive sprocket teeth. As a general rule of thumb, it is recommended that conveyor lengths do not exceed 100 ft (30 m) per drive, regardless of loading.Rexnord also recommends a 150° minimumwrap on the head sprocket. If necessary, this can be maintained with the use of a snubber roller

��Static Environment Applications

�Under certain conditions, thermoplastic can acquire a static nuisance charge. Static environments are classified as:

Class I: Static spark causes explosion - stainless steel chains are recommended.

Class II: Static spark is a nuisance charge - low charge will provide slight shock or possible circuit damage.

�All applications utilizing thermoplasticanti-static materials (i.e. AS, ESD) must be approved by Rexnord Application Engineering prior to quoting.

Grounding is crucial for the system to reduce static charges.

��UV Applications

�When conveyor chains are exposed to direct UV (Ultraviolet) or sunlight, DUV stabilized material should be utilized

!CAUTION

Material

MinimumTemperature

MaximumTemperature

Dry Dry Wet

°F °C °F °C °F °C

Acetal -40 -40 180 82 150 66

UHWMPE -100 -73 180 82 160 71

Nylon -40 -40 220 104 NR NR

Stainless Steel -100 -73 800 427 250 121

Steel -40 -40 350 177 250 121

LubricatedImpregnated Wood

-50 -46 160 71 160 71



MATERIAL CHARACTERISTIC TABLETableTop®


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> Rex® TableTop®

Chain Material Characteristic Table




Material Characteristics

Metal Themoplastic

S SS SSBHP™

WHPLF

WLFD

WDBWR AS ESD HS P CR MR DUV FR PS™ WX

Impact Resistant . . . . . . .Wear Resistant . . . . . . . .

Chemical Resistant* . . . .Strength . . . . . . . . . . . . . .

Low FrictionalCharacteristics

. . . .Capability to Run Dry

in Corners. . . . . .

Suitability in WetEnvironments

. . . . . . . . . . .Low Temperature

Capability (to 40° F). . . . . . . . . . . .

High TemperatureCapabilities (to +180° F)

. . . . . . . . . . . . . . . .Ultra Violet Capabilities . . . . . . .Suitability for Class II

(nuisance static). . . . .

Suitability for Class I (explosive static)

. .Non-magnetic Qualities . . . . . . . . . . . . . . . .

Flame Retardance . . . . .Capability to Convey Hot

Products (to +375° F). . . .

FDA Approval . . . . . . . .S = Carbon Steel ESD = Electrostatic Dissipative

SS = Stainless Steel HS = Heat Stabilized

SSB = Low Magnetic Stainless Steel P = Chemical Resistant

HP™ = High Performance CR = Extreme Chemical Resistant

WHP = White High Performance MR = Melt Resistant

LF = Low Friction DUV = Ultraviolet Resistant

WLF = White Low Friction FR = Flame Retardant

D = Acetal PS™ = Platinum Series™

WD = White Acetal WX = Abrasion Resistant

BWR = Black Wear Resistant

AS = Anti-Static

*See Corrosion Resistance Guide on Page EM - TT - 11 for more details



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CORROSION RESISTANCE GUIDE

General Rules of Thumb:

With acetal products, do not use cleaning or lubricating agents with a pH below 4 or above 10.This table is based on data available by various material suppliers.

i

Common or

Chemical Name

CarbonSteel

Austenitic AcetalNylon &

Nylatron® Polyester

ChemicallyResistant

FluorinatedPolymer

Polypropylene Polyethylene Neoprene EPDM

S SS, SSB

AS, DUV,HP™, LF,PS™, WD,WHP, WLF

BWR, HS,MR, WX

P, FR CR ESD UHMWPE

Acetic Acid (over 5%-up to 50%) U M U M S S S S M S

Acetone U S S S S U S S M SAlcohol S S S S S S S S S S

Ammonia M S U S S S S S S SBeer S S S S S S S S S S

Beverages-Soft Drinks S S S S S S S S S SBenzene S S S S S S M M M U

Brine (pickle) U M M M S S S S S SCarbon Tetrachloride M M S S S U M M U U

Chlorine U U U U S S S S U MCitric Acid U S M M S S S S S S

Cyclohexane - — S — — S U U S SEthyl Chloride - S S S S S M M M MFormaldehyde S S S S S M S S S SFormic Acid U U U U S S S S M MFruit Juices U S S S S S S S S S

Gasoline S S S S S S M M S UHexane - S S — S S S U S U

Hydrochloric Acid (up to 2%) U U U U S S S S M SHydrochloric Acid

(up to 37%) U U U U S S M S U M

Hydrogen Peroxide U S U U S S S S M SIodine U U U U U M M M U U

Isopropanol (isopropyl alcohol) S S S S S S S S S S

Lactic Acid U S S M S M S S S SMethylene Chloride - S S — U M S U U U

Milk S S S S S S S S S SMuriatic Acid U U U U S S M S U M

Nitric Acid (low concentrations) U S U U S S S S M S

Oil (vegetable or mineral) S S S S S M S S S UOzonated Water S S M U S S M S U S

Paraffin S S S S S S S S S UPhosphoric Acid (up to 10%) U S U U S S S S S S

Soap and Water M S S S S S S S S SSodium Chloride U M S S S S S S S S

Sodium Hydroxide (up to 25%) U S S U U M S S S S

Sodium Hypochlorite(Bleach) U U U U S S S S U S

Stearic Acid U S M S S S S S S MSulphuric Acid (up to 40%) U U U U S S S S M S

Toluene (Toluol) S S M S S M S U U UTurpentine - S S S S S S U S U

Vegetable Juices M S S S S S S S U SVinegar U S S S S M S S S S

Water (fresh) U S S S S S S S S SWhiskey S S S S S S S S S S

Wine S S S S S S S S S SXylene S S S S S S U M U U

Dash = Not Tested M = Marginal U = Unsatisfactory S = Satisfactory



CONVEYOR DESIGN RECOMMENDATIONSTableTop®

Conveyor Design

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> StraightRunningConfiguration

> Side-flexingConfiguration




��Straight Running Configuration

�A long conveyor with a single drive is the simplest and most ideal design. Sometimes several short conveyors are required due to application constraints

��Side-flexing Configuration

�Because a straight conveyor is not always possible due to flow processes, obstructions in the plant, etc., the designer can incorporate a side-flexing conveyor, which traverses one or more curve

�When planning a side-flexing conveyor layout, the designer must consider the following factors that affect chain life:

�Minimize the number of corners and the angle of each corner whenever possible

�Selective lubrication in the corners must be used with metal side-flexing chains and certain thermoplastic chains, which will prevent excessive noise and premature wear to the chain or corner

�When conveying from Point A to Point B, design the conveyor so that the drive is positioned furthest from the last corner (see drawing below), resulting in lower chain tension and maximizing chain life

In general, the straight section between the corner and the drive shaft must be at least 18 in (457 mm) to allow adequate room for the catenary (see page EM - TT - 25). The tail shaft section should be at least 12 in (305 mm).

�When conveying products 90°, a single side-flexing conveyor offers the following advantages over two separate straight conveyors that have transfer plates between them:

�Eliminates deadplate transfers or turntables, preventing the product from slipping or stalling

�Minimizes tipping and jamming

�Decreases noise

�Reduces the cost of controls and maintenance by only requiring one drive motor

Make sure that the entire chain path (carry, return, sprocket and catenary sag areas) has plenty of clearance for free chain travel. Make sure all frame and support members, piping,conduits and mounting hardware arewell clear of chain path.

Tail Shaft

Drive Shaft

Tail Shaft

Drive Shaft

AvoidPreferred

i

i

A A

B B



TableTop®

Conveyor Design

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> Carry Ways

> Straight Running

> Side-flexing - Bevel Design

> Side-flexing - TAB Design




CONVEYOR DESIGN RECOMMENDATIONS

��Carry Ways

��Straight Running

��Side-flexing - Bevel Design

��Side-flexing - TAB Design

1.00

in M

IN

(25.

4 m

m)

Guide Clearance

Typical Construction1.

00 in

MIN

(2

5.4

mm

)

GuideClearance Straight

Typical Construction - Straight Section

1.00

in M

IN

(25.

4 m

m)

Clearance0.25 in MIN

(6.4 mm)

Guide Clearance

Curve

Inside of Turn

1.00

in M

IN

(25.

4 m

m)

Guide ClearanceStraight


Inside of Turn

GuideClearance

Curve


(3.3 mm)

1.00

in M

IN

(25.

4 m

m)

Typical Construction - Corner Section


�Chain can be lifted out of straight sections only for cleaning or inspection

�Positive retention

�TABs hold chain down in incline or decline applications

�Chain top surface wear is decreased if TAB return is utilized

�Once assembled, TAB chain cannot be lifted out of the conveyor track

�Guide clearance is critical for both straight and side-flexing chains. For guide clearance dimensions of individual chains, see tables on page EM - TT - 17 or Product Catalog




Conveyor Design

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> Carry Ways

> LPC® (Low Pin Centerline)

> Magnetflex ®




��Carry Ways

��Side-flexing - LPC® (Low Pin Centerline) Design

��Side-flexing - Magnetflex® Design

1.00

in M

IN

(25.

4 m

m)



Guide Clearance

Curve

Inside of Turn

1.00

in M

IN

(25.

4 m

m)



Guide Clearance

Curve

Inside of Turn



�Chain can be lifted out of straight and corner sections for cleaning or inspection

�Must utilize Rex® corners

�Chain can be lifted out of straight and corner sections for cleaning or inspection

�Must utilize Rex® corners

NNOOTTEESS



TableTop®

Conveyor Design

Rex

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> Carry Ways

> Multiple Strands (Corner Section Shown)





��Carry Ways

��Multiple Strands (Corner Section Shown)

BEVEL

TAB

Inside of Turn

Inside of Turn


(3.3 mm)


(3.3 mm)


(3.3 mm)

0.06 in to 0.13 in TYP(1.5 mm to 3.3 mm)


(6.4 mm)


(6.4 mm)


(6.4 mm)

0.06 in to 0.13 in TYP(1.5 mm to 3.3 mm)


�For minimum side-flex radii of individual chains, see table on page EM - TT - 16

�Adjacent strands should share a common wearstrip

�Key all sprockets on the head shaft

�Key only one sprocket on the tail shaft, preferably the center strand

NNOOTTEESS



SIDE-FLEX RADIUS TABLETableTop®

Conveyor Design

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> Side-flexRadius Table




Chain StyleChain Width Minimum Side-flex Radius

in mm in mm

LPC279® 3.25, 4.50, 7.50 82.6, 114.3, 190.5 18.00 457.2

770 TAB 3.25 82.6 11.00 279.4

879, 879 TAB, 880, 880 TAB,

3.25 82.6 18.00 457.2

4.50 114.3 24.00 609.6

880 TAB BO 3.25, 4.50 82.6, 114.3 7.87 200.0

881, 881 TAB3.25 82.6 18.00 457.2

4.50, 7.50 114.3, 190.5 24.00 609.6

881 TAB G 3.63 92.1 18.00 457.2

882 4.50, 7.50, 10.00 114.3, 190.5, 254.0 24.00 609.6

882 TAB 3.25, 4.50, 7.50, 10.00, 12.00 82.6, 114.3, 190.5, 254.0, 304.8 24.00 609.6

882 TAB LBP3.75 95.3 26.25 666.8

7.50 190.5 24.00 609.6

882 TAB G 3.75 95.3 24.00 609.6

883 TAB LBP 4.50, 7.50 114.3, 190.5 24.00 609.6

1050 Magnetflex®, 1050 TAB 3.31 84.0 19.69 500.0

LPC®1050

3.25 82.6 18.00 457.2

3.31 84.0 19.69 500.0

4.50, 7.50 114.3, 190.5 24.00 609.6

1055 Magnetflex® 3.31, 4.50 84.0, 114.3 19.69 500.0

1055 TAB 3.31 84.0 19.69 500.0

LPC®1055

3.25 82.6 18.00 457.2

3.31 84.0 19.69 500.0

4.50, 7.50 114.3, 190.5 24.00 609.6

1843 TAB 1.25, 2.00 31.8, 50.8 10.00 254.0

1843 TAB G 1.50 38.1 10.00 254.0

1863 TAB 2.25 57.2 14.00 355.6

1873 TAB

2.25, 3.25, 4.50 57.2, 82.6, 114.3 14.00 355.6

6.00, 7.50, 10.00 152.4, 190.5, 254.0 18.00 457.2

12.00 304.8 24.00 609.6

1873 TAB G 3.75 95.3 15.00 381.0

1874 TAB

2.25, 3.25, 4.50 57.2, 82.6, 114.3 15.00 381.0

6.00 152.4 18.00 457.2

7.50 190.5 24.00 609.6

1874 TAB G 3.63 92.1 15.00 381.0

1883 TAB 2.50, 3.25 63.5, 82.6 28.00 711.2

3873 TAB10.00 254.0 18.00 457.2

12.00 304.8 24.00 609.6

4873 TAB 3.25 82.6 14.00 355.6

4874 TAB

3.25 82.6 15.00 381.0

6.00 152.4 18.00 457.2

7.50 190.5 24.00 609.6

��Rex® TableTop® Chain Track Details

��Straight Running

��Side-flexing



TableTop®

Conveyor Design

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> Rex®

TableTop®

Chain TrackDetails

> Straight Running

> Side-flexing




GUIDE CLEARANCE TABLES

Chain Style879

880

881

770T

879T

880T

880BO

881T

882882T

883T279 1843

1863

1874

4874

1873

4873

3873

18831050

1055

Hold Down Style Bevel TAB Bevel TAB LPC® TAB TAB TAB Magnetflex® TAB LPC®


in 1.75 1.81 2.44 2.38 1.75 0.88 1.31 1.66 1.73 1.81 1.75

mm 44.5 46.0 62.0 60.5 44.5 22.3 33.3 42.2 44.0 46.0 44.5

Guide ClearanceCorner

in 1.63 1.75 2.28 2.28 1.75 0.84 1.38 1.72 1.73 1.75 1.75

mm 41.1 44.5 57.9 57.9 44.5 21.3 34.9 43.7 44.0 44.5 44.5

Corner WearstripThickness

in 0.38 0.38 0.63 0.63 0.61 0.38 0.75 0.90 0.51 0.38 0.61

mm 9.7 9.7 15.9 15.9 15.5 9.7 19.1 22.0 13.0 9.7 15.5

Chain Style

812

815

820

831

821 1864 866 843863

963863T

Guide Clearance

in 1.75 5.50 1.38 1.63 0.94 1.44 1.31

mm 44.5 139.7 35.1 41.3 23.9 36.5 33.3

��Transfers

�Smooth transfer of the conveyed product from one chain to another is essential.The various methods are described below:

��Side Transfer

�Adjacent strands of chain should share a common wearstrip

�No stranded products

��Inline Transfer

�Adjacent strands of chain should share a common wearstrip

�Allows product to remain in straight line

�No stranded products

�� Radius Edge Chain

�An option to increase product stability at side transfers for certain products

�“R” designates chains with radius edge




Conveyor Design

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> Transfers

> Side Transfer

> Inline Transfer

> Radius EdgeChain




Outfeed Chain

Infeed Chain

Outfeed Chain Infeed Chain

PRODUCT PRODUCT

Standard Chain Radius Edge Chain



TableTop®

Conveyor Design

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> Transfers

> Deadplate Transfers





��Transfers

��Deadplate Transfers

�For deadplate transfers, products should step down to the adjacent chain or deadplate surface (typically a 0.03 in (0.8 mm) step is recommended)

�Deadplates to be mounted slightly higher than the top surface of the outfeed chain

�Deadplates should be as short as possible

�Deadplate transfers result in stranded product

0.03 in(0.8 mm)

0.03

in(0

.8 m

m)

0.03

in(0

.8 m

m)

Infeed Chain

Outfeed Chain

Variable Width

0.03

in(0

.8 m

m)

0.03

in(0

.8 m

m)

Outfeed Chain Infeed Chain

Variable Width

Inline Deadplate Transfer

90° Deadplate Transfer (Brush Transfer)

If space permits, use enough lanes to keep speed differentials between adjacent strands toabout 50 - 75 FPM (15 - 23 MPM), depending on product.!

CAUTION

When several chains run side by side, such as on multiple width conveyors and combiners or decombiners, make sure the return chains do not interfere with each other.

!CAUTION

For conveyors using multiple strands of chain, key all sprockets on the head shaft and keyonly one sprocket on the tail shaft, preferably the center strand.i

TableTop®

Conveyor DesignRex®TableTop®Chains

> Transfers

> Combiners /Decombiners




��Transfers

��Combiners / Decombiners

�Combiners take products from en masse (in mass) to single file

�Decombiners take products from single file to en masse (in mass)

Velocity (High)

Velocity (Low)COMBINERDIRECTION

DECOMBINERDIRECTION




��Alternate Drive Configurations

��Offset Wrap Drive

�Must utilize side-flexing chains

�There is less chain required in the conveyor because full return is not required

Guide Shoe

Guide Shoe

DIRECTION

OF TRAVEL

Carousel Without Return (Race track)

Tail Shaft(Idler Sprocket)

Head Shaft(Drive Sprocket)



TableTop®

Conveyor Design

Rex

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> Alternate Drive

Configurations

> Offset WrapDrive





NNOOTTEESS




Conveyor Design

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> Return Ways

> Full WidthSliding Return Bed

> Serpentine Style Return




��Return Ways

��Full Width Sliding Return Bed

�Continuous sheets extend the full width of the chain and almost the entire length between the tail and drive sprockets

�Plates or sheets should be perforated with slots or holes to allow for drainage and the passage of foreign materials

Solid beds should be avoided toeliminate debris build up and suction effect.

��Serpentine Style Return

�The chain is fully supported

�Allows for drainage and the passage of foreign materials

DIRECTION

OF TRAVEL


DIRECTION

OF TRAVEL


When returning chain with molded inserts (HPM), caution should be taken to insure that the inserts do not interfere with the return elements.

Possible solutions:�Return the chain on its TABs�Return the chain on the outer edge of the links via rollers or wearstrips

i

!CAUTION

�Rex® TableTop® chains can be supported in a variety of ways




��Return Ways

��Wearstrip Considerations

Cle

aran

ce0.

06 in

(1

.5 m

m)

Inside of Turn


(6.4 mm)

GuideClearance

Curve

Inside of Turn

Idler End Drive End

Hole for Fasteners

DIRECTIONOF TRAVEL

Tongue and Groove Wearstrip

Drive End

DIRECTIONOF TRAVEL

Idler End

Hole for Fasteners

Angle Cut Wearstrip

TAB Style Corner ReturnBevel Style Corner Return

Inside of Turn

Magnetflex® Corner Return

Inside of Turn

LPC® Corner Return

�Wearstrips will contract and expand due to environmental conditions. Suggested methods to accommodate this are shown below:

��General Recommendations

�Allow for thermal expansion of wearstrips

�All wearstrip surfaces that contact the chain should be in line and smooth (i.e. utilize counter sunk hold down screws, remove burrs)

TableTop®

Conveyor Design

Rex

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> Return Ways

> Wearstrip Considerations

> TAB Style Corner Return

> Bevel Style Corner Return

> Magnetflex®

Style CornerReturn

> LPC® Style Corner Return

> General Recommendations




��TAB Style Corner Return

��Magnetflex® Style Corner Return

�Allows for reduced top surface wear.See Product Catalog for available corners

See Product Catalog for available corners

��Bevel Style Corner Return


��LPC® Style Corner Return


��Return Ways

��Roller Return

�The first roller should be located far enough away from the head sprocket to allow for proper catenary sag

�Dimension "A" should be 1.5 to 2 time greater than Dimension "B"

�Rollers are recommended to be at least two times greater than the minimum back-flex radius of the chain

Example: When using 820 chain series, the minimum back-flex radius is 1.50 in (38.1 mm);therefore, the minimum roller diameter should be 3.00 in (76.2 mm).

�Insure rollers ALWAYS spin freely

�If rollers do not turn freely, uneven wear patterns or scalloping on the top carry surface of the chain can occur

�See table below for minimum back-flex radii for specific chains

�Roller returns are not recommended for roller base chain designs




Conveyor Design

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> Return Ways

> Roller Return




DIRECTIONOF TRAVEL

B(1 ft to 2 ft)

(0.3 m to 0.6 m)

A(1.5 x B)


Use Last Roller orGuide Shoe to Guide Chain onto Corner Trackor Wearstrips

B(1 ft to 2 ft)

(0.3 m to 0.6 m)

!CAUTION

!CAUTION

Back-flex Radius Table

Chain Style Min. Back-flex Radiusin mm

279 2.75 69.9770TAB 1.50 38.1

812, 812 TAB 3.15 80.0815, 815 TAB 6.50 165.1820, 821, 831 1.50 38.1

821 LBP 16.00 406.4843 6.00 152.4845 18.00 457.2

863 TAB 12.00 304.8866 13.00 330.2

879, 879 TAB, 880, 880 TAB, 880 TAB BO, 881, 881 TAB, 882, 882 TAB 1.50 38.1882 TAB LBP 9.00 228.6883 TAB LBP 2.00 50.8

963 6.00 152.41050, 1055 (TAB, LPC® & Magnetflex®) 5.12 130.0

1843 TAB 4.00 101.61844, 1863 TAB 6.00 152.4

1864 TAB, 1873 TAB 12.00 304.81874 TAB 10.00 254.01883 TAB 4.50 114.33873 TAB 7.00 177.8

4873 TAB, 4874 TAB 12.00 304.8




TableTop®

Conveyor Design

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> Catenary Sag

> Entry Radius for Sliding Returns




��Catenary Sag

�The function of the catenary is to allow a place for excess chain to accumulate

�Rex® TableTop® chains should never be run tight

�The catenary sag should be measured when running

��Entry Radius for Sliding Returns

�Provide a generous entry radius to the return section which permits the chain to feed smoothly into the return ways

�The entry radius should be greater than the minimum back-flex radius of the chain (see table on page EM - TT - 24)

�Rexnord recommends a 6 in (152 mm) minimum entry radius to prevent non-uniform wear

�If catenary sag is excessive or increases due to wear, it should be adjusted by removing links to obtain the proper sag

�Take-ups are typically not recommended

�The catenary sag should be located as close to the drive as possible

�When returning a chain on its TABs, guide the chain onto the return wearstrips using a guide shoe (see tables on page EM - TT - 17 for proper guide clearance)

�At the entry of the return wearstrips, provide rounded corners to prevent catching or snagging of the chain flights

Vertical Sag When Running3 in to 5 in

(76 mm to 127 mm)

DIRECTIONOF TRAVEL


150.0°MIN Wrap

Horizontal Span18 in to 24 in

(457 mm to 610 mm)


Return Wearstrips(TABBED CHAINS ONLY)

ENTRYDIRECTION

ENTRY

DIRECTION

SIDE VIEW

Break Sharp Corners

BOTTOM VIEW

Guide with ProperEntry Radius

6 in MIN(152 mm MIN)

Note 1: For 1843, vertical sag should be 2 in to 3.5 in (51 mm to 89 mm)

Note 2: For roller base chains and LBP chains,horizontal span should be 20 in to 24 in (508 mm to 610 mm)

Entry Radius for Sliding Returns

The catenary sag area must be free of all obstructions, such as frame cross-members,supports, drive components, that can damage chair or inhibit proper catenary sag.

!CAUTION

!CAUTION

��Sprocket and Wearstrip Location�The distance from the end of the wearstrip to the sprocket shaft centerline should equal

dimension "C"; otherwise, the wearstrip will interfere with the free articulation of the chain as it enters the sprocket

�The leading edges of the wearstrips should be beveled

�The following formulas and dimensions used in conjunction with the figure will give the proper shaft and wearstrip positioning

��Sprocket Location for Conventional Chains

A = (Pitch Diameter/2) + E

C = One Chain Pitch (which ensures support under chain at all times.)

�See table below for C & E dimensions

Example:For an 820 chain utilizing a 25T sprocket:

A = (Pitch Diameter/2) + E = (6.032 in/2) + 0.125 in = 3.141 inC = 1.50 in

Metric:A = (Pitch Diameter/2) + E = (153.21 mm/2) + 3.18 mm = 79.78 mmC = 38.1 mm

Tolerances

A = +0.03 in / -0.00 in (+0.8mm / -0.0 mm)C = +0.25 in / -0.00 in (+6.3 mm / -0.0 mm)

A

C

E

Pitch Diameter




Conveyor Design

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> Sprocket and Wearstrip Location

> SprocketLocationfor ConventionalChains




Shaft Drop Values

Chain Series“C”

Dimension“E”

Dimension

in mm in mmLPC279® 1.50 38.1 0.470 11.94

770 1.00 25.4 0.141 3.58812 1.50 38.1 0.125 3.18815 1.50 38.1 0.125 3.18820 1.50 38.1 0.125 3.18821 1.50 38.1 0.125 3.18

LBP821 1.50 38.1 0.125 3.18831 1.50 38.1 0.094 2.39843 1.00 25.4 0.234 5.94845 1.00 25.4 0.234 5.94863 1.50 38.1 0.406 10.31866 1.50 38.1 0.406 10.31879 1.50 38.1 0.109 2.77880 1.50 38.1 0.141 3.58881 1.50 38.1 0.125 3.18882 1.50 38.1 0.188 4.78

LBP882 1.50 38.1 0.188 4.78LBP883 1.50 38.1 0.188 4.78

963 1.50 38.1 0.406 10.311050

TAB & Magnetflex® 1.00 25.4 0.138 3.51

LPC®1050 1.00 25.4 0.470 11.941055

TAB & Magnetflex® 1.00 25.4 0.140 3.56

LPC®1055 1.00 25.4 0.470 11.941757 1.50 38.1 0.530 13.46

LBP1757 1.50 38.1 0.940 23.881843 1.00 25.4 0.266 6.761844 1.00 25.4 0.266 6.761863 1.50 38.1 0.406 10.311864 1.50 38.1 0.406 10.311873 1.50 38.1 0.406 10.311874 1.50 38.1 0.438 11.131883 2.00 50.8 0.480 12.193873 1.50 38.1 0.406 10.314873 1.50 38.1 0.406 10.314874 1.50 38.1 0.438 11.13

��Roller Chain Sprockets for Two Piece Chains

�Rex® TableTop® two piece roller chains operate over standard ANSI sprockets.Read important note below:

To prevent interference between chain hold down TABs and sprocket hubs, the maximum hubdiameters are as follows:

�1843 TAB - sprocket pitch diameter minus 0.65 in (16.5 mm)�1874 TAB, 4874 TAB - sprocket pitch diameter minus 1.30 in (33.0 mm)�1883 TAB - sprocket pitch diameter minus 1.65 in (41.9 mm)�1863 TAB, 863 TAB, 1873 TAB, 4873 TAB - sprocket pitch diameter minus 1.50 in (38.1 mm)�3873 TAB - sprocket pitch diameter minus 1.50 in (38.1 mm)

i



TableTop®

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> Roller Chain Sprocketsfor TwoPiece Chains





Rex® Roller Base Chain & Sprockets

Chain Series Base Chain Sprockets

1843TAB#1843

ANSI #401843TAB G

845#843

1844

863TAB #863

ANSI #60

963

#63

1863TAB

1873TAB

1873TAB G

1874TAB

1874TAB G

3873TAB

4873TAB

4874TAB

1864 #1864

1883TAB #1883 ANSI #80

NNOOTTEESS




Conveyor Design

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> Idler Wheeland SprocketLocations (Stationary Shafts Only)

> Shafting for StationaryTail Shafts




��Idler Wheel and Sprocket Location (Stationary Shafts Only)

�The idler wheels can only be used in place of tail shaft sprockets on Rex® TableTop® one piece unit link chains

�Idler wheels should not be used with rollerbase chains

�For proper location and smooth operation, the idler wheels should be mounted slightly below the top of the wearstrips

��Shafting Recommendations for Stationary Tail ShaftsRecommended Materials:

�Carbon Steel (dry environments only)

�Stainless Steel

Suggested Hardness:

�25 to 30 Rc

Suggested Surface Finish:

�63 µ-in Ra

Rexnord recommends rotating shafts in bearings. If bearings are not used, the following are guidelines for operating Rex® TableTop® sprockets on stationary shafts:

!CAUTION

Idler

Wheel inches mm

21T Idler Wheel 2.70 68.6




"A" Dimension

RecommendedSet Collar Clearance

0.03 in(0.8 mm)

1.50 in(38.1 mm)

A

Idler Wheel Location

SprocketMax. Recommended Chain Speed

FPM MPM

N - Acetal 0 - 50 0 - 15

UHMWPE 0 - 50 0 - 15

NS - Nylon, Split 0 - 50 0 - 30

LF Bushing (Idler Wheel) 0 - 50 0 - 90

Bronze Bushing 0 - 50 0 - 150

Bearings Recommended for Speeds > 300 Recommended for Speeds > 90



TableTop®

Conveyor Design

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> Keyway and Setscrew Sizes

> SplitSprocket Bore

Nomenclature





��Keyway and Setscrew Sizes

Rexnord uses ANSI Standards forKeyway Dimensions.

English keyed round bore sprockets areavailable with one setscrew as standard.Additional setscrews can be provided uponrequest. Metric keyed round bore sprockets are not supplied with setscrewas standard.

If multiple strands share a tail shaft, keyonly one sprocket and allow others torotate. Collars should be utilized to prevent floating.

��Split Sprocket Bore Nomenclature

Shaft Ready - Tight fit on the shaft with a keyway and setscrew.

Plain Bore - Same tight fit bore as the shaft ready bore, but without a keyway and setscrew.

Idler Bore - Round bore with a clearance fit(no keyway or setscrew). Designed to spinfreely on the shaft.

Rough Stock Bore - Wide tolerance bore usedfor work in process. Not for use on any shaft. Must be further machined for actual use.

English:

Shaft

Diameter

Key Width

(w)

Key Height

(h)

Keyseat Depth

(h/2)

Setscrew

Size

> 9/16" to 7/8" 3/16" 3/16" 3/32" 1/4-20

> 7/8" to 1-1/4" 1/4" 1/4" 1/8" 3/8-16

> 1-1/4" to 1-3/8" 5/16" 5/16" 5/32" 3/8-16

> 1-3/8" to 1-3/4" 3/8" 3/8" 3/16" 3/8-16

> 1-3/4" to 2-1/4" 1/2" 1/2" 1/4" 1/2-13

> 2-1/4" to 2-3/4" 5/8" 5/8" 5/16" 1/2-13

Metric:

Shaft

Diameter

Key Width

(w)

Key Height

(h)

Keyseat Depth

(h/2)

Setscrew

Size

> 22mm to 30mm 8mm 7mm 3.5mm M6 x 1

> 30mm to 38mm 10mm 8mm 4mm M8 x 1.25

> 38mm to 44mm 12mm 8mm 4mm M10 x 1.5

> 44mm to 50mm 14mm 9mm 4.5mm M10 x 1.5

> 50mm to 58mm 16mm 10mm 5mm M12 x 1.75

> 58mm to 65mm 18mm 11mm 5.5mm M12 x 1.75

KEYWAY

w

h / 2

Shaft Diameter

h

!CAUTION

i



Rex®

TableTop®

CalculationProgram

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> Rex®

TableTop®

Calculation Program




The Rex® TableTop® Calculation Program isavailable to perform chain pull calculations forspecific conveyor applications.

��To obtain the most recent calculation program:

�Download from Technical Support at:http://www.rexnord.com/flattop

�Contact Application Engineering

��Prior to performing chain pull calculations, the following information is needed:

�Chain style, material and width

�Wearstrip material

�Corner track material (if utilizing a side-flexing chain)

�Lubrication conditions (i.e. dry, water, soap & water, oil)

�Chain speed (FPM) or (MPM)

�Product weight (lbs/ft) or (kg/m)

�Product material

�Number of starts per hour (e.g. indexing conveyors)

�Percent of time product accumulation occurs (i.e. slippage)

�Portion of conveyor where product accumulation occurs

�Conveyor layout with dimensions

��The calculation output sheet contains the following information:

�Calculated headshaft chain tension

�Maximum allowable headshaft chain tension

�Percent of allowable chain tension

�Total horsepower required with an assumed gearbox efficiency of 100%

If the percent of allowable chain tension is 100% or less, your conveyor application is within chain capacity.

The horsepower requirement the program calculates is the "design horsepower" that is required to power the conveyor based on the input parameters. Additional considerations should be made for the type of drive used, efficiency losses in the powertrain, as well as any gearbox manufacturer's recommendations.

��For a side-flexing conveyor, the calculation output sheet contains the following information:

�Calculated corner tension (PV)

�Maximum allowable corner tension

If the calculated corner tension is less than the maximum allowable corner tension, your conveyor application is within chain PV capacity.

��For a side-flexing roller base chain conveyor, the calculation sheet contains the following information:

�Calculated adjusted corner tension

�Maximum allowable adjusted corner tension

If the calculated adjusted corner tension is less than the maximum allowable adjusted corner tension, your conveyor application is within chain capacity.

��The Rex® TableTop® Calculation Program calculates the following:

�Carousel conveyor analysis (i.e. offset wrap drive conveyors)

�Universal conveyor analysis (i.e. alpine systems, multiple loading systems)

�Catenary sag vs. length vs. tension

�Catenary sag vs. length vs. excess chain

�Product backline pressure (due to accumulation)

The Rex® TableTop® Calculation Program does not take environmental conditions into consideration. This calculation program ONLY provides information on whether the chain is within capacity.

!CAUTION

!CAUTION

Rex® TableTop® CALCULATION PROGRAM



Rex®

TableTop®

CalculationProgram

Rex

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p®

Ch

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> Calculating Chain Speed,Given Production Output

> Example

> Single File




��Calculating Chain Speed, Given Production Output�The speed of each chain depends on the production speed (containers per minute), the

container size (diameter or length), and product flow (single file or en masse). If en masse (in mass), the conveyor width must also be considered

��Example:A production line must run at a speed of 1600 containers per minute (CPM). The jars have a 3.00 in (76.2 mm) diameter.

�1) What is the chain speed when the jars are running single file on SS815-K325 chain?

�2) What is the chain speed when the jars are running en masse (in mass) on dual strands of SS815-K750 chain?

��1) Single File (one strand of SS815-K325 chain)

English

Container/ft = 12in/ft = 12 = 4 containers/ft

Dia. or length of Container (in) 3

Chain Speed (FPM) = CPM = 1600 = 400 FPM

Containers/ft 4

Metric

Container/m = 1000mm/m = 1000 = 13.1 containers/m

Dia. or length of Container (mm) 76.2

Chain Speed (MPM) = CPM = 1600 = 400 MPM

Containers/ft 13.1

1 ft or

(1 m)

DIRECTION

OF TRAVEL




Rex® TableTop® CALCULATION PROGRAMRex®

TableTop®

CalculationProgram

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> Calculating Chain Speed,GivenProductionOutput

> Mass Flow




��Calculating Chain Speed, Given Production Output

��2) Mass Flow (dual strands of SS815-K750 chain) (7.50 in (190.5 mm) wide) Overall conveyor width = 15.00 in (381.0 mm)

English

Container/ft2= 166.277 = 166.277 = 18.5 containers/ft2

Dia. (in)2 32

Conveyor Width (in)= # of stands x Flight Width (in) = 2 x 7.5 = 15.0 in

Chain Speed (FPM) = CPM = 1600 = 70 FPM

containers/ft2 x (Width (in)/12 in/ft) 18.5 x (15/12)

Metric

Container/m2= 1,500,000 = 1,500,000 = 198.1 containers/m2

Dia. (mm)2 76.22

Conveyor Width (mm) = # of stands x Flight Width (in) = 2 x 190.5 = 381 mm

Chain Speed (MPM) = CPM = 1600 = 21 MPM

containers/m2 x (Width (mm)/12 mm/m) 198.1 x (381/1000)

1 ft or

(1 m)

DIRECTION

OF TRAVEL

i 1) Oval and rectangular containers are usually only run single file. En masse (in mass) conveying of such containers leads to orientation and jamming problems.

2) The actual conveyor speeds are usually about 10-15% faster than the calculated required speeds in order to provide good "product take-away" from the adjacent machinery.

3) The speeds of individual chains on combiners and decombiners depend on mass flow speed, single file speed and the number of strands on the combiner/decombiner (see the caution note on page EM - TT - 20).

��Calculating Product Weight, Given Production Output

�When calculating chain pull, the weight of product per linear unit of measurement (in the directionof chain travel) per individual strand is required.

��Example:

Continuing with the previous example, a production line must run at a speed of 1600 containers perminute (CPM). Each jar weighs 1.00 lb (0.454 kg).

��1) Single File (one strand of SS815-K325 chain)

��2) Mass Flow (on each strand of SS815-K750 chain)

lbs/ft = (Containers/ft ) x (Flight Width (in)/12 in/ft) x (lbs/Container)

= 18.5 x (7.5/12) x 1 = 11.6 lbs/ft

kg/m = (Containers/m ) x (Flight Width (mm)/1000 mm/m) x (kg/Container)

= 198.1 x (190.5/1000) x 0.454 = 17.1 kg/m



Rex®

TableTop®

CalculationProgram

Rex

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p®

Ch

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> Calculating Product Weight,Given Production Output

> Example

> Single File

> Mass Flow





lbs/ft = (Containers/ft) x (lbs/Container) = 4 x 1 = 4.0 lbs/ft

kg/m = (Containers/m) x (kg/Container) = 13.1 x .454 = 5.9 kg/m

NNOOTTEESS

English

English

Metric

Metric



TableTop® PRODUCT SIZES AND WEIGHTSRex®

TableTop®

CalculationProgram

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> TypicalProduct Sizes and Weights




��Typical Product Sizes and Weights

inches mm lbs kg lbs/ft kg/m lbs/ft² kg/m²

Paper 1/2 Pint 3 x 3 76.2 x 76.2 0.60 0.27 2.4 3.6

Paper Pint 3 x 3 76.2 x 76.2 1.10 0.50 4.4 6.5

Paper Quart 3-1/8 x 3-1/8 79.4 x 79.4 2.30 1.04 8.8 13.1

Paper 1/2 Gallon 4-1/8 x 4-1/8 104.8 x 104.8 4.50 2.04 13.1 19.5

Plastic Gallon 6 x 6 152.4 x 152.4 8.90 4.04 17.8 26.5

Plastic 6 oz 2-5/8" Ø 66.7Ø 0.40 0.18 1.8 2.7 9.7 46.9

Plastic 6 Pack / 4 oz Containers 5 x 7 127 x 177.8 1.57 0.71 3.8 5.6

Plastic 1/2 lb 4 Ø 101.6Ø 0.60 0.27 1.8 2.7 6.2 30.3

Plastic 1 lb 4-3/4 Ø 120.7Ø 1.10 0.50 2.8 4.1 8.1 39.4

Plastic 2 lb 5 Ø 127Ø 2.30 1.04 5.5 8.2 15.3 74.4

Paper 12 oz 2-5/8 Ø 66.7Ø 1.00 0.45 4.6 6.8 24.1 117.2

Plastic Gallon 6 Ø 152.4Ø 1.17 0.53 2.3 3.5 5.4 26.3

Glass Gallon 6 Ø 152.4Ø 3.59 1.63 7.2 10.7 16.6 80.6

Paper 6.75 oz Box (Tetra) 1-1/2 x 2-1/4 38.1 x 57.2 0.48 0.22 3.8 5.7

Plastic 10 Pack / 6.75 Boxes (Tetra) 3 x 10-1/2 76.2 x 266.7 4.87 2.21 19.5 29.0

Aluminum 250 ml PET 2-5/64 Ø 52.9Ø 0.63 0.29 3.6 5.4 24.3 117.4

Aluminum 12 oz 2.6 Ø 66.0Ø 0.85 0.39 3.9 5.8 20.9 101.8

Plastic 500 ml PET 2-37/64 Ø 65.5Ø 1.16 0.53 5.4 8.0 29.0 141.0

Plastic 20 oz PET 2-7/8 Ø 73.0Ø 1.37 0.62 5.7 8.5 27.6 134.1

Plastic 1 Liter PET 3-3/16 Ø 81.0Ø 2.31 1.05 8.7 12.9 37.8 183.7

Plastic 1-1/2 Liter PET 4-3/16 Ø 106.4Ø 3.40 1.54 9.7 14.5 32.2 156.7



Glass 12 oz 2-1/2 Ø 63.5Ø 1.50 0.68 7.2 10.7 39.9 194.0

Glass 12 oz Non-Returnable 2-3/4 Ø 69.9Ø 1.20 0.54 5.2 7.8 26.4 128.1

Glass 16 oz Non-Returnable 2-3/4 Ø 69.9Ø 1.60 0.73 7.0 10.4 35.2 170.8

Glass 32 oz 2-5/8 Ø 66.7Ø 3.40 1.54 15.5 23.1 82.0 398.6

Glass 64 oz 3-5/8 Ø 92.1Ø 3.88 1.76 12.8 19.1 49.1 238.6

Aluminum 12 oz 2.6 Ø 66.0Ø 0.85 0.39 3.9 5.8 20.9 101.8

Paper 12 Pack / 12 oz Cans 10-3/4 x 7-3/4 273.1 x 196.9 10.40 4.72 11.6 17.3

Paper 12 Pack Fridge Pack 16 x 4-7/8 406.4 x 123.8 10.32 4.68 7.7 11.5

Paper 24 Pack / 12 oz Cans 16 x 10-3/4 406.4 x 273.1 20.16 9.14 15.1 22.5

Paper 24 Pack / 12 oz Cans (cube) 10-3/4 x 7-3/4 273.1 x 196.9 20.16 9.14 22.5 33.5

Paper 18 Pack / 12 oz Cans 16 x 7-3/4 406.4 x 196.9 14.69 6.66 11.0 16.4

Paper 30 Pack / 12 oz Cans 13-1/2 x 7-3/4 342.9 x 196.9 24.48 11.10 21.8 32.4

Glass 750 ml 2-7/8 Ø 73.0Ø 2.88 1.31 12.0 17.9 57.9 281.9

Glass 1.5 Liter 4-1/4 Ø 108.0Ø 6.37 2.89 18.0 26.8 58.6 284.9

Glass 12 oz 2-1/2 Ø 63.5Ø 1.22 0.55 5.9 8.7 32.5 157.8

Paper 4 Pack / 12 oz Bottles 5-1/8 x 5-1/4 130.2 x 133.4 5.07 2.30 11.9 17.7

Metal 1/2 lb 4-1/8 Ø 104.8Ø 0.80 0.36 2.3 3.5 7.8 38.0

Metal 1 lb 4-1/8 Ø 104.8Ø 1.30 0.59 3.8 5.6 12.7 61.7

Metal 2 lb 5-1/4 Ø 133.4Ø 2.50 1.13 5.7 8.5 15.1 73.3

Metal 3 lb 6-1/4 Ø 158.8Ø 3.80 1.72 7.3 10.9 16.2 78.6

Baby Food Glass Regular 2-3/8 Ø 60.3Ø 0.56 0.25 2.8 4.2 16.5 80.3

Baby Food Glass Junior 2-3/8 Ø 60.3Ø 0.80 0.36 4.0 6.0 23.6 114.8

Soup Metal 10.5 oz 2-5/8 Ø 66.7Ø 0.76 0.34 3.5 5.2 18.3 89.1

Soup Metal 18.5 oz 3-1/8 Ø 79.4Ø 1.33 0.60 5.1 7.6 22.6 110.0

Soup Metal 32 oz 4 Ø 101.6Ø 1.90 0.86 5.7 8.5 19.7 96.0

Cracker Paper 10 oz Box 2-1/4 x 5-1/4 57.2 x 133.4 0.72 0.33 3.8 5.7

Peanut Butter Plastic 18 oz 3 Ø 76.2Ø 1.15 0.52 4.6 6.8 21.2 103.3

Jelly Glass 32 oz 3-5/16" Ø 84.1Ø 2.15 0.98 7.8 11.6 32.6 158.6

Jelly Glass 18 oz 2-5/8 Ø 66.7Ø 1.62 0.73 7.4 11.0 39.1 189.9

Catsup Plastic 24 oz 2-1/4 x 3-3/4 57.2 x 95.3 1.63 0.74 8.7 12.9

Apple Sauce Glass 23 oz 3-5/16 Ø 84.1Ø 2.05 0.93 7.4 11.1 31.1 151.2

Mayonaise Glass 32 oz 4 Ø 101.6Ø 3.03 1.37 9.1 13.5 31.5 153.1

Cereal Paper 14 oz Box 2-3/8 x 7-1/2 60.3 x 190.5 1.06 0.48 5.4 8.0

Vegetable Metal 14.5 oz 2-15/16 Ø 74.6Ø 1.04 0.47 4.2 6.3 20.0 97.5

Tuna Metal 12 oz Can 4 Ø 101.6Ø 0.88 0.40 2.6 3.9 9.1 44.5

Tomato Sauce Metal 29 oz 4 Ø 101.6Ø 2.07 0.94 6.2 9.2 21.5 104.6

Dish Soap Plastic 25 oz 2-7/16 x 3-3/8 61.9 x 85.7 1.78 0.81 8.8 13.0

Liquid Laundry Soap Plastic 22 oz 2 x 3-3/8 50.8 x 85.7 1.60 0.73 9.6 14.3

Liquid Laundry Soap Plastic 32 oz 2-5/8 x 4-1/2 66.7 x 114.3 2.30 1.04 10.5 15.6

Liquid Laundry Soap Plastic 100 oz 5-1/2 x 7-3/4 139.7 x 196 7.01 3.18 15.3 22.8

Liquid Bleach Plastic Quart 3-1/4 Ø 82.6Ø 2.40 1.09 8.9 13.2 37.8 183.5

Liquid Bleach Plastic 1/2 Gallon 4-3/4 Ø 120.7Ø 4.80 2.18 12.1 18.0 35.4 171.9

Liquid Bleach Plastic Gallon 6-1/4 Ø 158.8Ø 9.50 4.31 18.2 27.1 40.4 196.5

Liquid Bleach Plastic 182 oz 7-1/4 Ø 184.2Ø 8.16 3.70 13.5 20.1 25.8 125.5

Toilet Paper Paper Individual Roll 4-1/4 Ø 108.0Ø 0.23 0.10 0.6 1.0 2.1 10.3

Toilet Paper Plastic 4 Pack 4-1/4 x 8-1/2 108 x 215.9 0.93 0.42 2.6 3.9

Toilet Paper Plastic 24 Pack 12 x 15-1/2 304.8 x 393.7 5.67 2.57 5.7 8.4

Tire Passenger Typical 28 Ø 711.2 Ø 35.00 15.87

Tire Truck Typical 48 Ø 1219.2 Ø 150.00 68.03Automotive

Content

Concentrated Juice

Juice

Soft Drink

Milk

Yogurt

Cottage Cheese

Coffee

Wine / Champagne

Toiletries

Dairy

Container

MaterialContainer Size

Beverages

Beer

Food

Cleaners

Single File En MasseBase Dimensions Weight Full

Documents

TableTop CHAIN MATERIALS · EM - TT - 2 Rex® TableTop® and MatTop® Chain Engineering Manual Contact Rexnord Application Engineering for more information 1.262.376.4800